* Qualcomm MSM CSID

Required properties:
- cell-index: csid hardware core index
- compatible :
    - "qcom,csid"
- reg : offset and length of the register set for the device
    for the csid operating in compatible mode.
- reg-names : should specify relevant names to each reg property defined.
- interrupts : should contain the csid interrupt.
- interrupt-names : should specify relevant names to each interrupts
  property defined.
- qcom,csi-vdd-voltage : should specify voltage level
    for mipi csi in uV.
- qcom,mipi-csi-vdd-supply : should contain regulator to be used for
    this csid core

Example:

   qcom,csid@fda08000 {
       cell-index = <0>;
       compatible = "qcom,csid";
       reg = <0xfda08000 0x200>;
       reg-names = "csid";
       interrupts = <0 51 0>;
       interrupt-names = "csiphy";
       qcom,csi-vdd-voltage = <1800000>;
       qcom,mipi-csi-vdd-supply = <&pm8941_l12>;
   };
